Hi, the fetchmail ebuild does not handle gzipped man pages,so the fetchmail manpages do not get installed. to fix this add a doman and a rm -rf line with ${D}/usr/share/man/*.1.gz to the ebuild right below the proper *.1 lines. hope this bug report works and is not to confusing as it is 4 AM here and i will go to bed now :)
fetchmail manpages appear to install just fine with fetchmail-6.1.2 Things appear to install without any error messages. Please test this latest version and let me know how things work for you.